Inflatable self-supporting bag

Details Inflatable self-supporting bag Inflatable self-supporting bag

1989-05-26

1990-07-17

Marcus, Stephen

Flexible bags

Inflatable

383 33, 383122, 206522, B65D 3300

Patent

active

049417541

ABSTRACT:
An inflatable self-supporting bag formed from a single sheet of flexible air impervious material and having a single ply lower portion defining a bottom wall and a lower portion of a bag side wall and an inflatable upper portion formed by two plies including an inner ply and an outer ply defining an air chamber therebetween. The inner and outer plies are connected together in face-to-face relation along a plurality of spaced apart lines of attachment which divide the air chamber into a plurality of intercommunicating sections which impart a generally cylindrical shape to the upper portion of the bag when it is inflated. A tubular inflating member having an associated removable plug is provided for inflating the upper portion of the bag.

REFERENCES:
patent: 750103 (1904-01-01), Eggers
patent: 2462215 (1949-02-01), Norman et al.
patent: 2580879 (1952-01-01), Belokin, Jr.
patent: 3428978 (1969-02-01), Johnson
patent: 3556186 (1971-01-01), Besthorne
patent: 3742994 (1973-07-01), Pensak
patent: 3777498 (1973-12-01), Andrews et al.
patent: 4612781 (1986-09-01), Swerdon
patent: 4705085 (1987-11-01), Brown
patent: 4858755 (1989-08-01), Kuivanen
patent: 4867576 (1989-09-01), Boyd

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